Internet Content: Fix Vimeo grabber

Vimeo now requires that oauth_callback is specified.  We set it to out-of-band
since we don't use it.
(cherry picked from commit 0c92bfd)

mythtv/programs/scripts/internetcontent/nv_python_libs/vimeo/vimeo_api.py

@@ -240,7 +240,8 @@ def get_request_token(self):
         Requests a request token and return it on success.
         """
         oauth_request = oauth.OAuthRequest.from_consumer_and_token(self.consumer,
-                                                                 http_url=self.request_token_url)
+                                                                 http_url=self.request_token_url,
+                                                                 callback="oob")
         oauth_request.sign_request(HMAC_SHA1, self.consumer, None)
         self.token = self._fetch_token(oauth_request)